Nut-lock



c. E. ALLEN.

-NUT LOCK.

APPLICATION FILED FEB. 9, 1921.

Patented Sept. 6, 1921.,

' UZWlZe/z 7 UNITED STATES NUT-LOCK.

Specification of Letters Patent.

Patented Sept. 8, 1921..

Application filed February 9, 1921. Serial No. 443,580.

To all whom it may concern.

Be it known that I, CHARLES E. ALLEN, a citizen of the United States, residing at Williamson, in the county of Franklin and State ofPennsylvania, have invented certain new and useful Improvements in Nut- Locks, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in nut locks, and has relation more particularly to a device of this general character and of a coupled nut and bolt type, and it is an object of the invention to provide a novel and improved nut lock embodying a wedge member engageable with a nut and having biting action upon the bolt whereby the nut is effectively held. against rotation with respect to the bolt.

Another object of the invention is to provide a novel and improved nut lock embodying a member engageable with the nut and provided with means for biting the threads of the bolt whereby the nut is effectively held against retrograde movement with respect to the bolt together with means for holding the member against displacement with respect to the nut.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improved nilt lock whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will be hereinafter definitely claimed.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein,

Figure 1 is a view in elevation of a nut lock constructed in accordance with the embodiment of my invention and in applied position, a second position of the wedge member being indicated by dotted lines;

Fig. 2 is a view in rear elevation of the structureillustrated in Fig. 1;

Fig. '3 is an elevational view of my improved. device as herein disclosed, said elevation being substantially at right angles to F 1g. 1, a second position of the wedge member being indicated by dotted lines;

Fig. 4 is a sectional view taken substantially on the line 4 4 of Fig. 3; and

Fig. 5 is a view in perspective of the wedge member unapplied. As disclosed in the accompanying drawings, B denotes a bolt upon which is thread ed a nut N. A facet 1 of the nut N and adjacent the inner face of the nut has disposed transversely thereacross a rabbet 2 which provides a shoulder 3 for a purpose to be hereinafter more particularly referred to. I

The facet 1 at substantially its transverse center is provided with a longitudinally directed groove or channel 4 open at the outer face of the nut N and also in communication with the rabbet 2. The groove or channel 4t tapers toward the rabbet 2 and the side Walls of said groove or channel 4: are undercut as is clearly illustrated in Fig. 2 of the drawings.

W denotes a wedge member engageable within the groove or channel 4 through the outer or larger end of said groove or channel and the side marginal positions of said member W are beveled as indicated at 5 in Fig. 5 to underlie the undercut portions of the side walls of the groove or channel l.

The outer or wide end of the member W is provided with an inwardly directed head or block 6, the inner face of which being provided with the teeth 7. Each of the teeth 7 is provided with'a relatively long cutting or biting edge which extends in a direction lengthwise of the bolt B when the nut N is applied, saidworking edge 8 of the tooth being of a length to bite or impinge a plurality of adjacent convolutions of the thread of a bolt so that the nut N will be effectively held by the applied member W against rotation, and particularly retrograde rotation, with respect to the bolt B.

The smaller end of the wedge member W is provided with a laterally directed arm or wing 8, which when the member Wis being inserted within the groove or channel 4:, rides over the facet l and assumes aposition above the rabbet 2. By a suitable i1npact on the arm or wing 8 by a hammer or other tool the said arm or wing 8 will be flexed, as illustrated in Fig. 2, into the rabbet 2 for coaction with the shoulder 3 so that the wedge member W is effectively held against outward movement with respect to the nut N. 1 a

As is indicated by dotted lines in Fig. 8 it is to be understood that when the smaller end of the wedge member is initially applied within the groove or channel 4 said wedge member will'be angularly disposed with respect to the boltB so that the wedge member W may be inserted a considerable distance within the groove or channel 1 before ablow is, imposedupon the outerfor larger end of the member WV to cause the teeth 7 to properly bite or impinge the thread of the :bolt B. This assures an effective assembly of the nut lock without undue resistance being offered to the desired application ofthe wedge member W by the head or block 6 thereof. It will also be understoodthat the wedge memberVV will have the longitudinal or end margins of the memher W. 1 I

From *the foregoing descr ption it is 'thoughtto be obvious-that a nut lock constructed inaccordance with an embodiment "of my invention is'particularly well adapted" for use by reason of the convenience and facility with which it may be employed, and itwill also be obvious that my invention is susceptible to some change and modification without departing'from the principles and spirit thereof, and for this reason I'do not wish to be understood as limiting myself to the precise arrangement and formationof the several parts herein shown in carrying out my invention in practice eXceptas hereinafter claimed. I r 7 V I claim: 7 r V 1; In combination with a nut having'a tapered groove in its outer face disposed in the same general direction as the bore of the nut and having a rabbet in said face in angular relation to the'groovc, said rabbet 7 providing a shoulder, a 'wedgemember 1nsertible within the groove and provided at one end with a head to i-engage the shank to which the nut is applied, the opposite end portionof the wedge member being pro- Vvided':withan'extension to co-act-with the a shoulder to-'hold the wedge memberagainst "outward movement when appliedwith'in the groove; p p p 2. In combination with a--nut having a tapered-groovei-n its 'outer face disposed in thesame general direction as thebo're 'ofthe "nut and "having a rabbetinsaidface in an gularjrelation the groove, said rabbet providing a shoulder, a wedge member in- 1 to hold the wedge member against outward movement when applied-within the groove sald extension being bendable and ridlng over the face of the nut when the wedge member is moving within the groove.

3. In combination with a nut having-a tapered groove in its outer face disposed in the 7 same general direction as the bore of the nut and having a rabbetin said face in angular relation to the groove,said 'rabbet rovi'ding a shoulder, a wedge member insertible within the groove and provided at'oneend with a head to engage the shank-to'which the'nut is applied, the opposite end portion-ofwthe wedge member:being provided-with anextension to co-act'with the shoulder to hold the wedge member against outward-movement when applied within the groove,jthe side walls of the "grooveandwe-dgemember overlapping. V V 4.In combination with anut havinga tapered groove i-n its outer face disposed in thesame general direction as the bore ofthe nut,a' wedge member insertible withinthe groove and provided with inwardly-directed blockat its outer end, said block being provided with a tooth 'adapted to impinge the shank upon which the nut is applied.

5. In combination with a nut-having -a tapered groove in its outer face'fdisposed in thesa'me general directionas the boreofthe nut, a wedge inember-inse'rtible within the groove and providedwith an inwardlydirected block at its outer end,;said block heing. provided with a toothjadapted to impinge the shank upon which the nut is applied,- "said wedge member being provided withrmeans to hold the same, whena-pplied,

against outward movement.

'6. In combination with a nut-having a tapered groove in its outerface disposed in the same general directionas the bore of the nut,-awedge member insertible withinthe provided with a'tooth'adapted to impinge.

the shank uponwhich the nut is applied, said 7 wedge member and nut being provided with co-acting" means to hold the wedge member, when applied, against'outward movement.

7.111 combination with a nut having a tapered groove in its-router 'face disposedin thesame generaldirection as the bore of; the

nut, a wedge memberinsertiblewithin the groove and: provided with an inwardly directed .blockat ;its' outerend, -said-block being provided with a; tooth adapted to impinge theshank upon which-the nut is applied, the cuttingjedge of the tooth being elongated and disposed in a direction lengthan inwardly directed block carried by the wise of the wedge member. member and provided With a tooth to im- 8. In combination with a nut having a pinge the shank upon which the nut is ap- 10 groove in its outer face, a member insertible plied. I 5 Within the groove, co-acting means carried In testimony whereof I hereunto afiix my by the member and a nut for holding the signature. member, when applied, against displacement, CHARLES EHGER ALLEN. 

